Sticky fly-paper



(No Model.)

B. KRULL. STICKY FLY PAPER.

No. 438,417. Patented 0%.14, 1890.

UNITED STATES PATENT OFFICE.

ERNST KRULL, OF SAN FRANCISCO, CALIFORNIA.

STICKY FLY- PAPER.

SPECIFICATION forming part of Letters Patent No. 438,417, dated October14, 1890.

Application filed May 2, 1890. Serial No. 350,269. (No model.)

To all whom it may concern.-

Be it known that I, ERNST KRULL, a citizen of the United States,residing in the city and county of San Francisco, and State ofCalifornia, have invented certain new and useful Improvements inFly-Paper; and I do hereby declare the following to be a full, clear,and exact description of said invention, such as will enable othersskilled in the art to which it most nearly appertains to make, use, andpractice the same.

My invention relates to certain new and useful improvements in sheets'for sticky flypaper and in the manner of preparing the same, as will behereinafter more fully set forth and appear in the below specification.

The invention consists in providing abacking or sheet for the receptionof the adhesive compound which shall effectually provide against theleaking or oozing out of said compound during transportation or storage.

Referring to the drawings forming a part of this application, in whichsimilar letters of reference denote corresponding parts, Figure 1 is atop plan view of the sheet open; Fi g. 2, a longitudinal sectional view,and Fig. 3 an end view showing the sheet folded.

The letter A indicates the inner field of the sheet, which is designedto be coated with the adhesive compound. Surrounding said field is thefree corrugated marginal border B. The sheet when prepared for use iscoated with the adhesive compound over the entire surface of the innerfield, so as to leave the corrugated marginal border entirely free fromthe same. It will thus be seen that when the sheet is closed thecorrugated borders inter lock with each other, so as to form a perfectseal against the outflow 0r oozing of the adhesive compound with whichthe inner field is coated. By thus forming the sheet with a corrugatedborder free from the compound I provide against the escape of theadhesive material when the sheet is open the same as when closed.However, my improved sheet will be found to be of particular advantagefor shipment or storage during the summer months.

I am aware that prior to my invention flypaper has been constructedwherein the b0rder is left free from the adhesive mixture and the edgesthereof raised. I do not, therefore, claim this construction; but

What I do claim, and desire to secure by Letters Patent, is.-

As an improved article of manufacture, a fiy-papenhavin g an inner fieldor background with a coating of adhesive material thereupon and an outerborder free from said adhesive mixture, said border being provided witha series of corrugations adapted to interlock and prevent the spread ofthe mixture when the paper is folded intermediate of its edges,substantially as set forth.

In testimony whereof I have hereunto affixed my signature in thepresence of witnesses.

ERNST KRULL.

Inpresence of N. A. ACKER, F. N. BIGELOVV.

